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Substituted heterocyclic compounds

a heterocyclic compound and substituent technology, applied in the field of substituting heterocyclic compounds, can solve the problems of ineffective treatment of these conditions

Active Publication Date: 2013-07-09
INCYTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes compounds that can interact with a specific protein called the histamine H4 receptor. These compounds can be used to treat a variety of diseases and conditions associated with this receptor. The patent also covers methods for using these compounds in the manufacture of a medicament for therapy. Overall, this patent provides a valuable tool for researchers to develop new treatments for histamine H4 receptor-related conditions.

Problems solved by technology

For examples, histamine is known to be involved in asthma and in the pruritus associated with atopic dermatitis and chronic idiopathic urticaria, but current anti-H1 and anti-H2 compounds (antagonists of H1 and / or H2 receptor), which are not active against H4 receptor (Thurmond et al., Nature Review Drug Discovery, 7:41-53, 2008), are ineffective in treating these conditions.

Method used

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  • Substituted heterocyclic compounds
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Examples

Experimental program
Comparison scheme
Effect test

example 1

4-(4-Methylpiperazin-1-yl)-6-(1,2,3,4-tetrahydroisoquinolin-7-yl)pyrimidin-2-amine

[0657]

Step 1: tert-butyl 7-bromo-3,4-dihydroisoquinoline-2(1H)-carboxylate

[0658]

[0659]Di-tert-butyldicarbonate (0.34 g, 1.6 mmol) was added to a mixture of 7-bromo-1,2,3,4-tetrahydroisoquinoline (0.30 g, 1.4 mmol, Alfa Aesar, Cat. #: B25712) and triethylamine (0.29 g, 2.8 mmol) in THF (4.0 mL). The mixture was stirred at room temperature (r.t.) for 1 hour (1 h.), quenched with aqueous Na2CO3, and extracted with ethyl acetate (3×20 mL). The combined organic layers were washed with brine, dried over MgSO4, filtered, and concentrated under reduced pressure to afford the desired product (0.43 g, yield: 97%) which was directly used in next step reaction without further purification. Analytic LCMS (M+Na)+: m / z=334.2 / 336.2; (M−But+H)+=256.1 / 258.1.

Step 2: tert-butyl 7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroisoquinoline-2(1H)-carboxylate

[0660]

[0661]To a solution of tert-butyl 7-bromo-3,4-dihyd...

example 2

4-[2-(4-Chlorobenzoyl)-1,2,3,4-tetrahydroisoquinolin-7-yl]-6-(4-methylpiperazin-1-yl)pyrimidin-2-amine

[0666]

[0667]4-Chlorobenzoic acid chloride (4.4 μL, 0.034 mmol) was added to a mixture of 4-(4-methylpiperazin-1-yl)-6-(1,2,3,4-tetrahydroisoquinolin-7-yl)pyrimidin-2-amine HCl salt (10 mg, 0.02 mmol) and triethylamine (16 μL, 0.12 mmol) in tetrahydrofuran (0.3 mL). After 30 min, the mixture was purified by RP-LCMS (pH=10) to afford the desired products. Analytic LCMS (M+H)+: m / z=463.3 / 465.3

example 3

4-[2-(Cyclobutylcarbonyl)-1,2,3,4-tetrahydroisoquinolin-7-yl]-6-(4-methylpiperazin-1-yl)pyrimidin-2-amine

[0668]

[0669]This compound was prepared from cyclobutanecarboxylic acid chloride and 4-(4-methylpiperazin-1-yl)-6-(1,2,3,4-tetrahydroisoquinolin-7-yl)pyrimidin-2-amine HCl salt using procedures analogous to those for Example 2. Analytic LCMS (M+H)+: m / z=407.4.

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Abstract

The present invention relates to substituted heterocyclic compounds of Formula I or XI:or pharmaceutically acceptable salts or N-oxides or quaternary ammonium salts thereof wherein constituent members are provided hereinwith, as well as their compositions and methods of use, which are histamine H4 receptor inhibitors useful in the treatment of histamine H4 receptor-associated conditions or diseases or disorders including, for example, inflammatory diseases or disorders, pruritus, and pain.

Description

[0001]This application claims benefit of priority to U.S. provisional patent application Ser. No. 61 / 161,939 filed on Mar. 20, 2009, which is hereby incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to substituted heterocyclic compounds, and compositions thereof as well as methods of use the same for treatment of histamine H4 receptor associated conditions or diseases or disorders such as inflammatory disorders, pruritus, and pain.BACKGROUND OF THE INVENTION[0003]Histamine is a biogenic amine that exerts its physiological and pathological functions through four G-protein coupled receptors, histamine receptors H1, H2, H3, and H4 (Parsons and Ganellin, Br. J. Pharm., 147:S127-S135, 2006). The roles of the first three receptors in mediating histamine functions have been well characterized: histamine mediates acute allergic responses via histamine H1 receptor (A. S. F. Ash and H. O. Schild, Br. J. Pharmac. Chemother., 27:427-439, 1966), ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C07D239/42
CPCC07D239/48C07D239/84A61P11/02A61P11/06A61P17/00A61P17/02A61P17/04A61P19/02A61P29/00A61P37/08A61K31/506A61K31/517A61K45/06C07D239/95C07D401/06C07D401/14C07D403/12C07D405/12C07D409/12C07D417/12
Inventor ZHUO, JINCONGMADUSKUIE, THOMAS P.QIAN, DING-QUANYAO, WENQING
Owner INCYTE CORP
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